Electrochemical corrosion of magnetron sputtered WTiN-coated mild steels in a chloride medium
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/5176 https://doi.org/10.1016/S0257-8972(02)00515-7 |
Resumo: | The electrochemical corrosion behaviour of WTiN coatings, of composition W 31, Ti 28 and N 40 at.% sputtered on carbon steel, chromium steel and high speed steel (HSS) has been investigated and the effect of the steel heat treatment on the steel/WTiN system performance explored. Open circuit potential measurements, polarisation curves and electrochemical impedance spectroscopy were used, together with X-ray diffraction and scanning electron microscopy to characterise the corroded and uncorroded coating/substrate systems. It was found that the influence of the substrate on corrosion resistance follows the order Carbon Steel<HSS<Chromium Steel. The best performance of the chromium steel/WTiN system can be associated with the higher compactness of the protective coating, since there is strong evidence that it is inert so that electrolyte penetration through the coating defects and pores is responsible for the initiation of substrate corrosion. Heat treatment of the substrate has some influence on the corrosion of the HSS/coating system, suggesting that there may be one ideal steel treatment temperature for which the coating adhesion is higher. |
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Electrochemical corrosion of magnetron sputtered WTiN-coated mild steels in a chloride mediumCorrosionCoated steelsSputteringCarbon steelHigh speed steelChromium steelThe electrochemical corrosion behaviour of WTiN coatings, of composition W 31, Ti 28 and N 40 at.% sputtered on carbon steel, chromium steel and high speed steel (HSS) has been investigated and the effect of the steel heat treatment on the steel/WTiN system performance explored. Open circuit potential measurements, polarisation curves and electrochemical impedance spectroscopy were used, together with X-ray diffraction and scanning electron microscopy to characterise the corroded and uncorroded coating/substrate systems. It was found that the influence of the substrate on corrosion resistance follows the order Carbon Steel<HSS<Chromium Steel. The best performance of the chromium steel/WTiN system can be associated with the higher compactness of the protective coating, since there is strong evidence that it is inert so that electrolyte penetration through the coating defects and pores is responsible for the initiation of substrate corrosion. Heat treatment of the substrate has some influence on the corrosion of the HSS/coating system, suggesting that there may be one ideal steel treatment temperature for which the coating adhesion is higher.http://www.sciencedirect.com/science/article/B6TVV-473F2MV-S/1/91525d9a77234a2d57d1825d9d68d1b42002info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/5176http://hdl.handle.net/10316/5176https://doi.org/10.1016/S0257-8972(02)00515-7engSurface and Coatings Technology. 161:2-3 (2002) 257-266Alves, Valéria A.Brett, Christopher M. A.Cavaleiro, Albanoinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2020-11-06T16:59:47Zoai:estudogeral.uc.pt:10316/5176Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:01:24.332647Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Electrochemical corrosion of magnetron sputtered WTiN-coated mild steels in a chloride medium |
title |
Electrochemical corrosion of magnetron sputtered WTiN-coated mild steels in a chloride medium |
spellingShingle |
Electrochemical corrosion of magnetron sputtered WTiN-coated mild steels in a chloride medium Alves, Valéria A. Corrosion Coated steels Sputtering Carbon steel High speed steel Chromium steel |
title_short |
Electrochemical corrosion of magnetron sputtered WTiN-coated mild steels in a chloride medium |
title_full |
Electrochemical corrosion of magnetron sputtered WTiN-coated mild steels in a chloride medium |
title_fullStr |
Electrochemical corrosion of magnetron sputtered WTiN-coated mild steels in a chloride medium |
title_full_unstemmed |
Electrochemical corrosion of magnetron sputtered WTiN-coated mild steels in a chloride medium |
title_sort |
Electrochemical corrosion of magnetron sputtered WTiN-coated mild steels in a chloride medium |
author |
Alves, Valéria A. |
author_facet |
Alves, Valéria A. Brett, Christopher M. A. Cavaleiro, Albano |
author_role |
author |
author2 |
Brett, Christopher M. A. Cavaleiro, Albano |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Alves, Valéria A. Brett, Christopher M. A. Cavaleiro, Albano |
dc.subject.por.fl_str_mv |
Corrosion Coated steels Sputtering Carbon steel High speed steel Chromium steel |
topic |
Corrosion Coated steels Sputtering Carbon steel High speed steel Chromium steel |
description |
The electrochemical corrosion behaviour of WTiN coatings, of composition W 31, Ti 28 and N 40 at.% sputtered on carbon steel, chromium steel and high speed steel (HSS) has been investigated and the effect of the steel heat treatment on the steel/WTiN system performance explored. Open circuit potential measurements, polarisation curves and electrochemical impedance spectroscopy were used, together with X-ray diffraction and scanning electron microscopy to characterise the corroded and uncorroded coating/substrate systems. It was found that the influence of the substrate on corrosion resistance follows the order Carbon Steel<HSS<Chromium Steel. The best performance of the chromium steel/WTiN system can be associated with the higher compactness of the protective coating, since there is strong evidence that it is inert so that electrolyte penetration through the coating defects and pores is responsible for the initiation of substrate corrosion. Heat treatment of the substrate has some influence on the corrosion of the HSS/coating system, suggesting that there may be one ideal steel treatment temperature for which the coating adhesion is higher. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/5176 http://hdl.handle.net/10316/5176 https://doi.org/10.1016/S0257-8972(02)00515-7 |
url |
http://hdl.handle.net/10316/5176 https://doi.org/10.1016/S0257-8972(02)00515-7 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Surface and Coatings Technology. 161:2-3 (2002) 257-266 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
aplication/PDF |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133905742200832 |